All-dielectric ultrathin conformal metasurfaces: lensing and cloaking applications at 532 nm wavelength.

ABSTRACT: Metasurfaces are ideal candidates for conformal wave manipulation on curved objects due to their low profiles and rich functionalities. Here we design and analyze conformal metasurfaces for practical optical applications at 532 nm visible band for the first time. The inclusions are silicon disk nanoantennas embedded in a flexible supporting layer of polydimethylsiloxane (PDMS). They behave as local phase controllers in subwavelength dimensions for successful modification of electromagnetic responses point by point, with merits of high efficiency, at visible regime, ultrathin films, good tolerance to the incidence angle and the grid stretching due to the curvy substrate. An efficient modeling technique based on field equivalence principle is systematically proposed for characterizing metasu

SUBMITTER: Cheng J 

PROVIDER: S-EPMC5144014 | biostudies-literature | 2016 Dec

REPOSITORIES: biostudies-literature